CN113063649A

CN113063649A - Concrete multipoint toughness test device for building engineering

Info

Publication number: CN113063649A
Application number: CN202110190908.3A
Authority: CN
Inventors: 张赫
Original assignee: Individual
Current assignee: Jiangsu Xingou Intelligent Manufacturing Technology Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-07-02
Anticipated expiration: 2041-02-20
Also published as: CN113063649B

Abstract

The invention discloses a multipoint toughness test device for concrete for constructional engineering, which comprises a device fixing frame, a clamping plate, a cleaning plate, a polishing disc and a toughness test roller, wherein a supporting column is fixedly welded on the device fixing frame, a fixing frame is fixedly welded at the top end of the supporting column, the fixing frame and the supporting column are internally connected with a bracket in a limiting sliding manner, a connecting plate is fixedly welded at the bottom end of the bracket, a pulling wire is bolted on the connecting plate, the pulling wire is wound on a fixing coil, and the fixing coil is fixedly welded on a one-way threaded rod. This concrete multiple spot toughness test device for building engineering is provided with the mill, can drive circular gear outwards mesh when the fixed plate of both sides outwards moves and rotate on the pinion rack, can drive the mill through the fixed axle this moment and wait to detect the position to carry out the automatic leveling work of polishing to the concrete, and then can guarantee the stability and the convenience of follow-up test work, increased the use variety of device.

Description

Concrete multipoint toughness test device for building engineering

Technical Field

The invention relates to the technical field of building construction, in particular to a multi-point toughness test device for concrete for constructional engineering.

Background

Although cement concrete is one of the most important building materials in the world, the use of the material has a long history, the material performance and the construction technology have great leap in recent decades, and the modern technology is gradually developed into a scientific technology of a door system due to the improvement of the requirement on the concrete performance, the complexity caused by the increase of concrete components and the modernization of the construction technology, so that in order to further improve the use performance of the concrete, a toughness testing device is required to be combined to test the toughness of the concrete, and the stability of subsequent research work is ensured.

However, most of the existing concrete toughness test devices for construction engineering have the following problems:

the device for testing and evaluating the impact resistance toughness of the concrete material, such as the concrete material with the publication number of CN102507351A, combines a cam and a steel ball to perform an impact test on the concrete, calculates and tests by calculating the impact times, but cannot perform stable self-limiting work on the concrete, and further cannot ensure the stability and convenience of subsequent test work;

secondly, the conventional concrete toughness testing device for the building engineering cannot automatically clean and level the part to be detected of the concrete in the working process, and the unevenness of the part to be detected of the concrete can cause adverse effects on subsequent testing work;

third, conventional concrete toughness test device for building engineering is behind the course of work, and a large amount of dust and impurity can be remained at the bottom, need the staff to carry out follow-up cleaing away, and conventional concrete toughness test device for building engineering can not carry out automatic clear work to the dust and the impurity of bottom in the course of work, and work efficiency is low.

Therefore, we propose a multipoint toughness testing device for concrete for construction engineering so as to solve the problems proposed in the above.

Disclosure of Invention

The invention aims to provide a multipoint toughness testing device for concrete for constructional engineering, which is used for solving the problems that the existing concrete toughness testing device for constructional engineering in the market proposed by the background technology cannot perform stable self-limiting work on the concrete, cannot perform automatic cleaning and leveling work on a part to be detected of the concrete, and cannot perform automatic cleaning work on dust and impurities at the bottom.

In order to achieve the purpose, the invention provides the following technical scheme: a multipoint toughness test device for concrete for constructional engineering comprises a device fixing frame, a clamping plate, a cleaning plate, a polishing disc and a toughness test roller, wherein a support column is welded and fixed on the device fixing frame, a fixing frame is welded and fixed at the top end of the support column, a bracket is connected in the fixing frame and the support column in a limiting sliding mode, a connecting wire is bolted on the bracket, a connecting plate is welded and fixed at the bottom end of the bracket, a pulling wire is bolted on the connecting plate, the pulling wire is wound on the fixing coil, the fixing coil is welded and fixed on a one-way threaded rod, the one-way threaded rod is rotatably connected in the device fixing frame, the cleaning plate is movably connected on the one-way threaded rod, the cleaning plate is connected in the device fixing frame in a limiting sliding mode, a limiting frame is welded and fixed on the device fixing frame, a scroll spring is welded and fixed in the limiting frame, and the top end of the scroll spring is welded, the pneumatic cylinder is installed to the top bolt of device mount, and the bolt-mounting has the hydraulic stem on the pneumatic cylinder, the bottom welded fastening of hydraulic stem has the mounting panel, and rotates on the mounting panel and be connected with two-way threaded rod, swing joint has the sliding plate on the two-way threaded rod, and the spacing sliding connection of sliding plate is on the mounting panel, the bottom swing joint of sliding plate has the bracing piece, and the bottom swing joint of bracing piece has the fixed plate, swing joint has the catch bar on the mounting panel, and the bottom swing joint of catch bar is on the fixed plate, welded fastening has the toughness test roller on the sliding plate.

Preferably, connecting wire sliding connection is on the leading wheel, and leading wheel screw mounting in fixed frame, the top bolt of connecting wire has the grip block, and the spacing sliding connection of grip block is in fixed frame to be provided with the concrete body in the fixed frame, the screw connection has the rubber pole on the grip block, and the bottom screw connection of rubber pole is in fixed frame.

Preferably, the connecting lines are symmetrically distributed on the left side and the right side of the bracket, the central axis of the bracket and the central axis of the fixing frame are located on the same vertical central line, the cross section of the fixing frame is U-shaped, the connecting lines correspond to the guide wheels and the clamping plates one to one, and rubber rods are fixed in the middle of the clamping plates.

Preferably, be threaded connection between one-way threaded rod and the clearance board, and one-way threaded rod connects the middle part at the clearance board to the length of clearance board is greater than the distance between the fixed frame of both sides.

Preferably, the sliding plate is connected with a gear tooth plate through a screw, the gear tooth plate is connected with a circular gear in a meshed mode, the circular gear is fixed to the top end of the fixed shaft in a welded mode, the fixed shaft is connected to the fixed plate in a rotating mode, and the bottom end of the fixed shaft is fixedly welded with the polishing disc.

Preferably, the sliding plate is in threaded connection with the bidirectional threaded rod, the sliding plates are symmetrically distributed on the left side and the right side of the bidirectional threaded rod, the bidirectional threaded rod is connected to the middle of the sliding plate, the central axis of the sliding plate and the central axis of the toughness test roller are located on the same vertical central line, and meanwhile the length of the toughness test roller is smaller than that of the supporting rod.

Preferably, the bracing piece is articulated between fixed plate and the sliding plate, and fixed plate and sliding plate all with the catch bar between for articulated to the length of catch bar is greater than the length of bracing piece, and the bracing piece symmetric distribution is in the left and right sides of fixed plate moreover.

Preferably, the length and the height of the wheel tooth plate are respectively greater than those of the fixing plate, and the length of the fixing plate is greater than the diameter of the circular gear.

Preferably, the diameter of the circular gear is larger than the diameter of the polishing disc and the width of the fixing plate, the cross section of the fixing plate is L-shaped, the bottom end face of the side part of the fixing plate is flush with the bottom end face of the polishing disc, and the polishing disc and the fixing plate are distributed in parallel.

Compared with the prior art, the invention has the beneficial effects that: the multipoint toughness test device for the concrete for the construction engineering;

(1) the device is provided with a clamping plate and a cleaning plate, a concrete body can drive a bracket to move downwards under the action of gravity, connecting wires on two sides of the bracket can drive corresponding clamping plates to move towards the middle simultaneously by combining with guide wheels, so that the stable limiting work can be conveniently and quickly carried out on the concrete body, when the concrete is broken in the test process and falls off, the bracket returns to the original position, and the cleaning plate on a one-way threaded rod can be driven by combining with a reset spring to automatically push and clean the bottom of a device fixing frame, so that the use convenience and stability of the device are improved;

(2) the device is provided with the bidirectional threaded rod and the push rods, the test positions of the toughness test rollers on the sliding plates on the two sides can be conveniently and quickly adjusted by rotating the bidirectional threaded rod, and the fixing plates on the two sides can simultaneously move outwards in combination with the corresponding push rods, so that impurities on the to-be-detected concrete part can be conveniently and quickly pushed and removed, and the use safety and the stability of the device are improved;

(3) the device is provided with the polishing disc, can drive circular gear outwards to mesh when the fixed plate of both sides outwards moves and rotate on the pinion rack, can drive the polishing disc through the fixed axle this moment and wait to detect the position and carry out the level and smooth work of polishing automatically to the concrete, and then can guarantee the stability and the convenience of follow-up test work, increased the use variety of device.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the fixing frame of the present invention;

FIG. 3 is a schematic side view of the cleaning plate according to the present invention;

FIG. 4 is a schematic view of the spiral spring of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 6 is a side view of the sliding plate of the present invention;

FIG. 7 is a schematic top view of a cogged plate according to the present invention;

FIG. 8 is a schematic view of a ductile test roll according to the present invention;

FIG. 9 is a side view of the bracket of the present invention.

In the figure: 1. a device mount; 2. a support pillar; 3. a fixing frame; 4. a bracket; 5. a connecting wire; 6. a guide wheel; 7. a clamping plate; 8. a rubber rod; 9. a concrete body; 10. a connector tile; 11. dragging the thread; 12. fixing the coil; 13. a one-way threaded rod; 14. cleaning the plate; 15. a limiting frame; 16. a volute spiral spring; 17. a hydraulic cylinder; 18. a hydraulic lever; 19. mounting a plate; 20. a bidirectional threaded rod; 21. a sliding plate; 22. a support bar; 23. a fixing plate; 24. a push rod; 25. a toothed plate; 26. a circular gear; 27. a fixed shaft; 28. grinding disc; 29. toughness test roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a multipoint toughness test device for concrete for constructional engineering comprises a device fixing frame 1, supporting columns 2, a fixing frame 3, brackets 4, connecting wires 5, guide wheels 6, a clamping plate 7, rubber rods 8, a concrete body 9, a connecting plate 10, a dragging line 11, a fixing coil 12, a one-way threaded rod 13, a cleaning plate 14, a limiting frame 15, a volute spring 16, a hydraulic cylinder 17, a hydraulic rod 18, a mounting plate 19, a two-way threaded rod 20, a sliding plate 21, a supporting rod 22, a fixing plate 23, a pushing rod 24, a gear tooth plate 25, a circular gear 26, a fixing shaft 27, a polishing disc 28 and toughness test rollers 29, wherein the supporting columns 2 are fixedly welded on the device fixing frame 1, the top ends of the fixing frame supporting columns 2 are fixedly welded with the supporting columns 3, the brackets 4 are connected with the fixing frame 3 and the supporting columns 2 in a limiting sliding mode, the connecting wires 5 are bolted on the brackets 4, the bottom ends of the brackets, and the linking plate 10 is bolted with a dragging line 11, the dragging line 11 is wound on a fixed coil 12, the fixed coil 12 is welded and fixed on a one-way threaded rod 13, the one-way threaded rod 13 is rotationally connected in the device fixing frame 1, the one-way threaded rod 13 is movably connected with a cleaning plate 14, the cleaning plate 14 is in limited sliding connection in the device fixing frame 1, the device fixing frame 1 is fixedly welded with a limiting frame 15, a volute spring 16 is welded and fixed in the limiting frame 15, the top end of the volute spring 16 is welded and fixed on the one-way threaded rod 13, the top end of the device fixing frame 1 is bolted with a hydraulic cylinder 17, a hydraulic rod 18 is bolted on the hydraulic cylinder 17, the bottom end of the hydraulic rod 18 is welded and fixed with a mounting plate 19, the mounting plate 19 is rotationally connected with a two-way threaded rod 20, the two-way threaded rod 20 is movably connected with a sliding plate, the bottom of the sliding plate 21 is movably connected with a supporting rod 22, the bottom end of the supporting rod 22 is movably connected with a fixing plate 23, the mounting plate 19 is movably connected with a push rod 24, the bottom end of the push rod 24 is movably connected on the fixing plate 23, and the sliding plate 21 is fixedly welded with a toughness test roller 29.

Connecting wire 5 sliding connection is on

leading wheel

6, and 6 mounting screws of leading wheel are in fixed frame 3, the top bolt of connecting wire 5 has

grip block

7, and 7 spacing sliding connection of grip block are in fixed frame 3, and be provided with concrete body 9 in the fixed frame 3, the screw connection has rubber pole 8 on the grip block 7, and the bottom screw connection of rubber pole 8 is in fixed frame 3, can guarantee that grip block 7 can carry out stable spacing slip work in fixed frame 3.

Connecting wire 5 symmetric distribution is in the left and right sides of bracket 4, and the central axis of bracket 4 is located same vertical central line with the central axis of fixed frame 3, and the transversal "U" font of personally submitting of fixed frame 3, and connecting wire 5 and leading wheel 6 and grip block 7 one-to-one, the middle part of grip block 7 is fixed with rubber pole 8 simultaneously, can guarantee that grip block 7 can carry out stable work of resetting after the use, has increased the use variety of device.

For threaded connection between one-way threaded rod 13 and the clearance board 14, and one-way threaded rod 13 is connected in the middle part of clearance board 14 to clearance board 14's length is greater than the distance between the fixed frame 3 in both sides, can conveniently control clearance board 14 and carry out stable motion on one-way threaded rod 13, has increased the use convenience of device.

The sliding plate 21 is screwed with a gear wheel plate 25, the gear wheel plate 25 is engaged with a circular gear 26, the circular gear 26 is welded and fixed at the top end of a fixed shaft 27, the fixed shaft 27 is rotatably connected on the fixed plate 23, and the bottom end of the fixed shaft 27 is welded and fixed with a grinding disc 28, so that the working state of the grinding disc 28 on the fixed shaft 27 can be stable.

The sliding plate 21 is in threaded connection with the bidirectional threaded rod 20, the sliding plates 21 are symmetrically distributed on the left side and the right side of the bidirectional threaded rod 20, the bidirectional threaded rod 20 is connected to the middle of the sliding plate 21, the central axis of the sliding plate 21 and the central axis of the toughness test roller 29 are located on the same vertical central line, meanwhile, the length of the toughness test roller 29 is smaller than that of the supporting rod 22, and adverse effects of the toughness test roller 29 on the supporting rod 22 can be effectively avoided.

The supporting rod 22 is hinged with the fixed plate 23 and the sliding plate 21, the fixed plate 23 and the sliding plate 21 are hinged with the push rod 24, the length of the push rod 24 is larger than that of the supporting rod 22, the supporting rods 22 are symmetrically distributed on the left side and the right side of the fixed plate 23, the stability of the connection state between the supporting rod 22 and the fixed plate 23 and the sliding plate 21 can be guaranteed, and the use diversity of the device is increased.

The length and the height of pinion rack 25 are greater than the length and the height of fixed plate 23 respectively, and the length of fixed plate 23 is greater than the diameter of circular gear 26, can guarantee that pinion rack 25 can drive circular gear 26 on the fixed plate 23 and carry out stable meshing rotation work, has increased the stability in use of device.

The diameter of circular gear 26 is greater than the diameter of polishing dish 28 and the width of fixed plate 23, and the transversal personally submitting of fixed plate 23 is "L" font to the lateral part bottom face of fixed plate 23 and the bottom face parallel and level of polishing dish 28 are parallel distribution between polishing dish 28 and the fixed plate 23 in addition, can guarantee that circular gear 26 can drive polishing dish 28 and carry out stable rotation work, and then can guarantee the stability of follow-up experimental work.

The working principle is as follows: before the concrete multipoint toughness test device for the construction engineering is used, the overall condition of the device needs to be checked firstly, and normal work can be determined;

when the device starts to work, with reference to fig. 1-4, firstly, a concrete body 9 to be tested is placed in a fixed frame 3 at the top of a support column 2 on a device fixed frame 1, at the moment, a bracket 4 in the fixed frame 3 can be driven to move downwards in the bracket 4 and the support column 2 under the action of gravity of the concrete body 9, at the moment, a connecting line 5 at two sides of the bracket 4 can be driven to move downwards under the action of the movement of the bracket 4, and simultaneously, the connecting line 5 can move downwards, corresponding clamping plates 7 at two sides can be driven to move towards the middle simultaneously by combining a guide wheel 6, and the concrete body 9 can be conveniently and quickly subjected to stable limiting work, and at the moment, the bracket 4 can drive a dragging line 11 to move downwards through a connecting plate 10 at the bottom of the bracket 4, at the moment, the dragging line 11 rotates through a one-way threaded rod 13 on a fixed coil 12, the cleaning plate 14 on the one-way threaded rod 13 can be driven to move outwards, dust and impurities at the bottom of the device fixing frame 1 can be pushed and cleaned, and the scroll spring 16 in the limiting frame 15 can be stably compressed while the one-way threaded rod 13 rotates;

when the toughness test work needs to be performed on the concrete body 9, with reference to fig. 1 and 5-8, a worker can drive the sliding plates 21 on the two sides to simultaneously move outwards or inwards on the mounting plate 19 by rotating the bidirectional threaded rod 20, so as to ensure the stability of the subsequent test work, the subsequent hydraulic cylinder 17 can drive the mounting plate 19 to move downwards by combining with the hydraulic rod 18, the polishing disc 28 below the fixing plate 23 is in contact with the concrete body 9, the mounting plate 19 continuously moves downwards, the fixing plate 23 can be pushed to move outwards and stably under the oblique pushing action of the pushing rod 24, the supporting rods 22 on the two sides can ensure that the fixing plate 23 can always keep horizontal while moving outwards while the fixing plate 23 moves, and the fixing plate 23 can move upwards while moving outwards, and the fixing plate 23 can drive the circular gear 26 to move upwards while moving outwards, at the moment, the circular gear 26 can be driven to stably engage and rotate under the engagement action of the gear tooth plate 25, at the moment, the fixing shaft 27 can be combined to drive the polishing disc 28 to stably rotate and polish the concrete body 9 under the rotation action of the circular gear 26, so that the part to be detected on the concrete body 9 can be conveniently and quickly polished and leveled, at the moment, redundant dust and impurities can be pushed outwards under the pushing action of the side end face of the fixing plate 23, at the moment, the fixing plate 23 continuously moves downwards and drives the toughness test roller 29 to be in contact with the concrete body 9, and at the moment, the toughness test roller 29 is combined to be used to stably test the toughness of the concrete body 9;

then when the concrete body 9 is broken in the test process, by combining the figures 1-4 and 9, the concrete body 9 is separated from the fixed frame 3, and the rubber rods 8 at the two sides can drive the corresponding clamping plates 7 and the connecting wires 5 to return to the original positions, so as to drive the bracket 4 to move upwards and return to the original positions, at the moment, the bracket 4 can drive the dragging wire 11 to move upwards through the connecting plates 10, the volute spiral spring 16 in the limiting frame 15 can drive the one-way threaded rod 13 on the fixed coil 12 to rotate reversely, and can roll the dragging wire 11, so that the next work and use are facilitated, and the cleaning plate 14 can be driven to move outwards under the reverse rotation of the one-way threaded rod 13, so as to automatically and conveniently clean impurities and dust falling to the bottom of the device fixing frame 1, so that the whole device works, and those not described in detail in this specification, such as concrete body 9, scroll spring 16, hydraulic cylinder 17, abrasive disc 28 and toughness test roll 29, are well known in the art to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a concrete multiple spot toughness test device for building engineering, includes device mount (1), grip block (7), cleaning plate (14), grinding disc (28) and toughness test roller (29), its characterized in that: the device fixing frame (1) is fixedly welded with a support column (2), the top end of the support column (2) is fixedly welded with a fixing frame (3), the fixing frame (3) and the support column (2) are internally provided with a bracket (4) in a limiting sliding manner, the bracket (4) is connected with a connecting wire (5) in a bolting manner, the bottom end of the bracket (4) is fixedly welded with a connecting plate (10), the connecting plate (10) is connected with a pulling wire (11) in a bolting manner, the pulling wire (11) is wound on a fixed coil (12), the fixed coil (12) is fixedly welded on an one-way threaded rod (13), the one-way threaded rod (13) is rotatably connected in the device fixing frame (1), the one-way threaded rod (13) is movably connected with a cleaning plate (14) and the cleaning plate (14) is movably connected in the device fixing frame (1), the cleaning plate (14) is fixedly welded in the device fixing frame (1), and a volute spiral spring (16) is fixedly welded in the limiting frame (15), the top end of the volute spiral spring (16) is fixedly welded on the one-way threaded rod (13), a hydraulic cylinder (17) is installed on the top end of the device fixing frame (1) through a bolt, a hydraulic rod (18) is installed on the hydraulic cylinder (17) through a bolt, a mounting plate (19) is fixedly welded at the bottom end of the hydraulic rod (18), a two-way threaded rod (20) is rotatably connected on the mounting plate (19), a sliding plate (21) is movably connected on the two-way threaded rod (20), the sliding plate (21) is in limiting sliding connection on the mounting plate (19), a supporting rod (22) is movably connected at the bottom end of the sliding plate (21), a fixing plate (23) is movably connected at the bottom end of the supporting rod (22), a pushing rod (24) is movably connected on the mounting plate (19), and the bottom end, and a toughness test roller (29) is welded and fixed on the sliding plate (21).

2. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 1, wherein: connecting wire (5) sliding connection is on leading wheel (6), and leading wheel (6) screw mounting in fixed frame (3), the top bolt of connecting wire (5) has grip block (7), and the spacing sliding connection of grip block (7) is in fixed frame (3) to be provided with concrete body (9) in fixed frame (3), the screw connection has rubber pole (8) on grip block (7), and the bottom screw connection of rubber pole (8) is in fixed frame (3).

3. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 2, characterized in that: connecting wire (5) symmetric distribution is in the left and right sides of bracket (4), and the central axis of bracket (4) is located same vertical central line with the central axis of fixed frame (3) to the transversal personally submitting of fixed frame (3) is "U" font, and connecting wire (5) and leading wheel (6) and grip block (7) one-to-one, and the middle part of grip block (7) is fixed with rubber pole (8) simultaneously.

4. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 2, characterized in that: be threaded connection between one-way threaded rod (13) and cleaning plate (14), and one-way threaded rod (13) are connected in the middle part of cleaning plate (14) to the length of cleaning plate (14) is greater than the distance between the fixed frame of both sides (3).

5. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 1, wherein: the sliding plate (21) is connected with a toothed plate (25) through screws, the toothed plate (25) is connected with a circular gear (26) in a meshed mode, the circular gear (26) is fixed to the top end of a fixed shaft (27) in a welded mode, the fixed shaft (27) is connected to the fixed plate (23) in a rotating mode, and a polishing disc (28) is fixed to the bottom end of the fixed shaft (27) in a welded mode.

6. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 1, wherein: the sliding plate (21) is in threaded connection with the bidirectional threaded rod (20), the sliding plates (21) are symmetrically distributed on the left side and the right side of the bidirectional threaded rod (20), the bidirectional threaded rod (20) is connected to the middle of the sliding plate (21), the central axis of the sliding plate (21) and the central axis of the toughness test roller (29) are located on the same vertical central line, and meanwhile the length of the toughness test roller (29) is smaller than that of the supporting rod (22).

7. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 1, wherein: the supporting rods (22) are hinged with the fixed plate (23) and the sliding plate (21), the fixed plate (23) and the sliding plate (21) are hinged with the push rod (24), the length of the push rod (24) is larger than that of the supporting rods (22), and the supporting rods (22) are symmetrically distributed on the left side and the right side of the fixed plate (23).

8. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 5, wherein: the length and the height of the wheel tooth plate (25) are respectively greater than those of the fixing plate (23), and the length of the fixing plate (23) is greater than the diameter of the circular gear (26).

9. The multipoint toughness test device of concrete for constructional engineering as claimed in claim 5, wherein: the diameter of the circular gear (26) is larger than the diameter of the polishing disc (28) and the width of the fixing plate (23), the cross section of the fixing plate (23) is L-shaped, the bottom end face of the side part of the fixing plate (23) is flush with the bottom end face of the polishing disc (28), and the polishing disc (28) and the fixing plate (23) are distributed in parallel.